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home battery rebate Australia

Home battery rebates in Australia for 2026, worked out with your own numbers

See how the federal Cheaper Home Batteries discount is calculated after the 1 May 2026 changes, which state incentives still exist, how big a battery your evenings actually need, and how to read an installer's quote before you sign.

  • The STC factor table, size tiers and installation-date rule explained from the Clean Energy Regulator's published figures
  • Sizing, payback and quote calculators with every assumption shown and every price labelled illustrative
  • Door-to-door sales, warranties and the Australian Consumer Law, plus who to complain to in each state

Start hereCheaper Home Batteries Discount Estimator (STC factor)

Wall-mounted home battery beside a switchboard in the garage of an Australian brick house at dusk

Explore by topic

Battery Costs, Rebates and 2026 Rules

How the federal battery discount and solar STCs are calculated, which state incentives remain, what drives the price of a battery and the rules a system must meet.

8 Guides

Mistakes, Warranties and Official Help

Common battery buying mistakes, door-to-door and phone sales rules, warranties and consumer guarantees, installer accreditation and where to complain.

6 Guides

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Tools

Home Battery Payback Calculator

Estimate how many years a home battery takes to pay back from its net cost after incentives, your yearly bill saving and a yearly change in that saving.

Home battery set-ups compared

OptionHow it worksGood forWatch out for
AC-coupled battery added to existing solarBattery has its own inverter and connects on the AC side; existing solar inverter staysHomes with a working solar inverter that is not near end of lifeExisting inverter must be VPP-capable if the battery connects to it; two inverters to maintain
Hybrid inverter replacing the old inverterOne inverter manages panels and battery on the DC sideOlder solar systems whose inverter is due for replacement anywayPanel string compatibility, extra cost of the inverter, export limits
New solar and battery packagePanels, hybrid inverter and battery installed in one job; both create STCsHomes with no solar or a very small old systemBattery size should follow the new solar size; compare against solar-only payback
Essential-circuit backupBattery keeps selected circuits (lights, fridge, internet) running in a blackoutAreas with occasional outages and modest backup needsNot all batteries back up by default; changeover gear may be extra

Comparison →

Frequently asked questions

How much is the home battery rebate in Australia in 2026?

The federal Cheaper Home Batteries Program gives a discount through STCs, not a fixed dollar rebate. For batteries installed from 1 May to 31 December 2026 the CER's STC factor is 6.8 certificates per usable kWh for the first 14 kWh, so a 13.5 kWh battery creates about 91 certificates. At an illustrative $33–$38 per certificate that is roughly $3,000–$3,500. Use the discount estimator for your size.

Did the battery rebate change on 1 May 2026?

Yes. From 1 May 2026 the STC factor fell from 8.4 to 6.8 and now steps down every six months, and the factor is tapered by size: 100% for the first 14 kWh, 60% from 14 to 28 kWh and 15% from 28 to 50 kWh. The installation date, not the contract date, decides which factor applies. See the STC factor guide.

Do I have to join a virtual power plant to get the federal discount?

No. The battery must be capable of joining a VPP at installation if it is grid-connected, but joining is optional under the federal rules. Some state incentives, such as the NSW VPP incentive and the WA Residential Battery Scheme, do require you to enrol in a VPP.

Can I get the battery discount if I already have solar panels?

Yes. A battery can be added to a new or existing solar system up to 100 kW. If the battery connects to your existing inverter, that inverter must be VPP-capable and CEC-listed (or listed when the solar was commissioned); otherwise it must be replaced. See adding a battery to existing solar.

Are there state battery rebates on top of the federal discount?

Some. NSW offers a VPP incentive for batteries joined to an eligible VPP, and WA's Residential Battery Scheme offers rebates of up to $1,300 for Synergy customers and up to $3,800 for Horizon Power customers plus no-interest loans, both checked in October 2026. Victoria's Solar Homes battery loans are closed. See state incentives.

How long does a home battery take to pay back?

It depends on the net price, how many kWh you shift each day and the gap between your import rate and feed-in tariff. In our illustrative example a $10,800 net cost and an $887 yearly saving give about 12 years. Run your own numbers in the payback calculator.

A salesperson came to my door offering a free battery. What are my rights?

An agreement signed at your door is usually an unsolicited consumer agreement under the Australian Consumer Law. You have 10 business days to cancel, the seller cannot take payment or install during that time, and they must leave when asked. There is no 'free' battery under the federal program. See door-to-door sales rules.

How this site is made

Dusk Reserve is an independent information project. Guides are drafted with the help of AI writing tools and checked against official and primary sources before publication; see our Editorial Policy. We are not affiliated with any provider mentioned on the site and do not sell products or services.